| Arvedi |
2-3/8″ – 4-1/2″ ERW Alloy & Carbon |
| Chung Hung |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
| Dongbu |
7″ – 13-3/8″ ERW Carbon |
| Husteel |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
| Hyundai |
1” – 13-3/8” ERW Alloy & Carbon |
| Kumkang |
2-3/8″ – 7-5/8″ ERW Alloy & Carbon |
| Marcegaglia |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
| Nexteel |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
| Robor |
2-3/8” – 7” ERW Alloy & Carbon |
| Shin Yang |
7″ – 13-3/8″ ERW Carbon |
| Tension |
2-3/8” – 9-5/8” ERW Alloy & Carbon |
| Tuper |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
| Vyksa |
7″ – 13-3/8″ ERW Alloy & Carbon |
| Wheatland |
2-3/8” – 13-3/8” ERW Alloy & Carbon |
